All puzzle pieces are compatible with common clamp building blocks from other manufacturers and are ideal for puzzle beginners due to the plug-in principle and the handy size. The familiar building blocks are familiar to children and facilitate the insertion of the puzzle pieces, in addition, the base plate provides the necessary stability and also serves as an ideal puzzle base when traveling or cleaning up. When puzzling, the visual perception, short-term memory and logical thinking of children are playfully promoted. The handy feel of the puzzle pieces and the age-appropriate motifs also improve eye-hand coordination and motor skills. The completion of puzzle motifs, whose level of difficulty is adapted to the age and abilities of the child, promotes self-confidence and through the concentrated, persistent activity, frustration tolerance and focused work are strengthened. Like all Hubelino products, the puzzles are manufactured in Germany under the highest quality standards and tested by independent testing institutes. The Life on the Farm puzzle (35 pieces) is 100% compatible with common building blocks from other manufacturers. 35-piece puzzle for children from 4 years Compatible building blocks and base plate support during puzzling Promotes playful perception, logical thinking and eye-hand coordination Made in Germany - safe puzzling guaranteed by tested materials.